CN102943157A - Isothermal quenching process for 5Cr5WMoSiV shear blade - Google Patents
Isothermal quenching process for 5Cr5WMoSiV shear blade Download PDFInfo
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- CN102943157A CN102943157A CN2012103967296A CN201210396729A CN102943157A CN 102943157 A CN102943157 A CN 102943157A CN 2012103967296 A CN2012103967296 A CN 2012103967296A CN 201210396729 A CN201210396729 A CN 201210396729A CN 102943157 A CN102943157 A CN 102943157A
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Abstract
The invention relates to an isothermal quenching process for a 5Cr5WMoSiV shear blade, and belongs to the field of special steel quenching heat treatment processes. The process comprises the steps of heating a workpiece to a temperature of 1040 DEG C, keeping the temperature for 35 minutes, then quenching the workpiece in an isothermal salt bath, with a quenching temperature of 310 DEG C, and keeping for 2 hours, wherein the salt bath is a nitrate bath; and the hardness (HRC) of the processed workpiece is 52-54. The quenching process guarantees the toughness of the workpiece, makes the internal organization of the workpiece improved, and solves the tipping problem in usage process. The processed workpiece is shear blade steel.
Description
Technical field
The present invention relates to 5Cr
5WMoSiV cutting edge isothermal quenching technique, it belongs to special steel quenching heat treatment technology field.
Background technology
Along with the continuous popularization with the steel range of application of high grade pipe line steel, auto truck beam, high-strength container plate and high-strength engineering machinery, requirement to sheet material structure property, outward appearance precision also improves thereupon, and it is also harsher to be used for shearing the required cutting edge performance index of sheet material.Adopt material 6CrW2Si, substance 100.5kg, heat treatment hardness 53-58HRC.The problems such as tipping, work-ing life be short in use appear in this cutting edge, and sampling analysis shows that the material of cutting edge own there is no any defective, for the characteristics that institute's shear material intensity is much improved than design load, determines the inapplicable existing operating mode of 6CrW2Si material.And 5Cr
5The WMoSiV shearing edge steel has good anti-fatigue performance to be especially suitable for use as the frequent hot-work die steel jumpy of temperature.This steel has good comprehensive mechanical property simultaneously, such as: good thermostability, anti-temper resistance, high rigidity, hot strength, good hardening capacity.Its complete processing is the oil quenchings that adopt at present more.
Summary of the invention
In view of the defective that prior art exists, the objective of the invention is to provide 5Cr
5WMoSiV cutting edge isothermal quenching technique improves its internal organizational structure, good toughness.
For achieving the above object, the technology used in the present invention solution is that workpiece is heated to 1040 ℃, keeps 35 minutes, and then workpiece quenches in the isothermal salt bath, and temperature is 310 ℃, keeps 2 hours; Salt bath is that salt made from earth containing a comparatively high percentage of sodium chloride is bathed, and hardness is HRC:52-54 after the workpiece processing.Other steps in the technological process are routine operation.
After adopting such scheme, compared with prior art have following beneficial effect: quenching technology of the present invention has guaranteed the toughness of workpiece, and its interior tissue also is improved, and the workpiece of processing is shearing edge steel, in use solves the problem of tipping.
Description of drawings
Fig. 1 is process schematic representation of the present invention.
Embodiment
5Cr shown in Figure 1
5WMoSiV cutting edge isothermal quenching technique figure, the process using oil quenching before improving is heated to 1040 ℃ with workpiece, keeps 35 minutes, quenches 4 hours in 610 ℃ of isothermal oil baths, and hardness is HRC:52-54 after its workpiece processing.The phenomenon that occurs tipping in the finished product use procedure.
Process using salt made from earth containing a comparatively high percentage of sodium chloride after the improvement is bathed, and workpiece is heated to 1040 ℃, keeps 35 minutes, and then workpiece is bathed at isothermal salt made from earth containing a comparatively high percentage of sodium chloride and quenched, and temperature is 310 ℃, keeps 2 hours; Hardness is HRC:52-54 after the workpiece processing.
The adopt new technology good toughness of workpiece of processing, its interior tissue also is improved, and the workpiece of processing is shearing edge steel, in use solves the problem of tipping.
Claims (1)
1.5Cr
5WMoSiV cutting edge isothermal quenching technique, the processing process of employing are according to routine operation, and the equipment of employing is general-purpose equipment, it is characterized in that: workpiece is heated to 1040 ℃, keeps 35 minutes, and then workpiece quenches in the isothermal salt bath, temperature is 310 ℃, keeps 2 hours; Salt bath is that salt made from earth containing a comparatively high percentage of sodium chloride is bathed, and hardness is HRC:52-54 after the workpiece processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103967296A CN102943157A (en) | 2012-10-18 | 2012-10-18 | Isothermal quenching process for 5Cr5WMoSiV shear blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103967296A CN102943157A (en) | 2012-10-18 | 2012-10-18 | Isothermal quenching process for 5Cr5WMoSiV shear blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102943157A true CN102943157A (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103967296A Pending CN102943157A (en) | 2012-10-18 | 2012-10-18 | Isothermal quenching process for 5Cr5WMoSiV shear blade |
Country Status (1)
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| CN (1) | CN102943157A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110373521A (en) * | 2019-07-15 | 2019-10-25 | 中铁工程装备集团隧道设备制造有限公司 | TBM hob cutter ring complex phase strenthen-toughening mechanizm technique |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002044429A2 (en) * | 2000-12-01 | 2002-06-06 | Benton Graphics Inc. | Bainite blades |
| CN101139645A (en) * | 2007-10-23 | 2008-03-12 | 天津理工大学 | Short-time lower bainite isothermal heat treatment process for industrial 9SiCr steel |
| CN101144140A (en) * | 2006-09-15 | 2008-03-19 | 宝山钢铁股份有限公司 | Flying shear blade and preparation method thereof |
| CN102418043A (en) * | 2011-12-16 | 2012-04-18 | 北京科技大学 | High-obdurability shear blade die steel and heat treatment method |
-
2012
- 2012-10-18 CN CN2012103967296A patent/CN102943157A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002044429A2 (en) * | 2000-12-01 | 2002-06-06 | Benton Graphics Inc. | Bainite blades |
| CN101144140A (en) * | 2006-09-15 | 2008-03-19 | 宝山钢铁股份有限公司 | Flying shear blade and preparation method thereof |
| CN101139645A (en) * | 2007-10-23 | 2008-03-12 | 天津理工大学 | Short-time lower bainite isothermal heat treatment process for industrial 9SiCr steel |
| CN102418043A (en) * | 2011-12-16 | 2012-04-18 | 北京科技大学 | High-obdurability shear blade die steel and heat treatment method |
Non-Patent Citations (3)
| Title |
|---|
| 何一正等: "Cr12MoV滚丝模的等温淬火", 《金属热处理》, no. 6, 30 June 1979 (1979-06-30) * |
| 杨富强: "等温淬火在工、模具中的应用", 《金属加工(热加工)》, no. 10, 31 October 1989 (1989-10-31) * |
| 陈清等: "5Cr5WMoSiV钢剪刃淬火工艺研究", 《金属加工(热加工)》, no. 11, 30 November 2009 (2009-11-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110373521A (en) * | 2019-07-15 | 2019-10-25 | 中铁工程装备集团隧道设备制造有限公司 | TBM hob cutter ring complex phase strenthen-toughening mechanizm technique |
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Application publication date: 20130227 |